Matches in SemOpenAlex for { <https://semopenalex.org/work/W2149479976> ?p ?o ?g. }
Showing items 1 to 76 of
76
with 100 items per page.
- W2149479976 endingPage "665" @default.
- W2149479976 startingPage "651" @default.
- W2149479976 abstract "Ventricular extrasystoles exert a variable effect on idioventricular rhythm. The postextrasystolic, or the returning, cycle may be unchanged, or it may be shorter or longer than the dominant cycle. The factors responsible for these different responses have never been investigated. Therefore, the effect of electrically induced extrasystoles was studied by microelectrode techniques in an in vitro model of idioventricular rhythm consisting of spontaneously firing Purkinje fiber bundles with their attached ventricular segments. Late extrasystoles lengthened the Purkinje returning cycle, primarily by transiently increasing the duration of spontaneous phase-4 depolarization. In contrast, early extrasystoles produced shortening of the returning cycle, primarily because of the marked abbreviation of the duration of the extrasystolic action potential. Other factors affecting the ultimate duration of the Purkinje returning cycle were delineated. The effect of extrasystoles on the electrical activity of the ventricular segments was studied by surface electrograms. This effect was complex and was modified by the direction of propagation of the extrasystole with respect to the pacemaker site and by the degree of conduction delay. Ventricular electrical activity usually reflected the electrical events occurring in the pacemaker cells, but frequent exceptions occurred: the ventricular returning cycle could be prolonged while the corresponding Purkinje returning cycle was shortened and vice versa. Interpolation of an extrasystole did not necessarily indicate failure of the extrasystole to discharge the pacemaker site. The effects of extrasystoles on idioventricular rhythm which have been described in the earlier literature are easily understood from the findings of this study." @default.
- W2149479976 created "2016-06-24" @default.
- W2149479976 creator A5005445993 @default.
- W2149479976 creator A5034848713 @default.
- W2149479976 creator A5038976168 @default.
- W2149479976 date "1972-06-01" @default.
- W2149479976 modified "2023-09-24" @default.
- W2149479976 title "Effect of Extrasystoles on Idioventricular Rhythm" @default.
- W2149479976 cites W1975346322 @default.
- W2149479976 cites W1985638445 @default.
- W2149479976 cites W2000599458 @default.
- W2149479976 cites W2051742584 @default.
- W2149479976 cites W2066265161 @default.
- W2149479976 cites W2069080404 @default.
- W2149479976 cites W2101859326 @default.
- W2149479976 cites W2138319073 @default.
- W2149479976 cites W2144267047 @default.
- W2149479976 cites W2259391570 @default.
- W2149479976 cites W2265610892 @default.
- W2149479976 cites W2584949778 @default.
- W2149479976 doi "https://doi.org/10.1161/01.res.30.6.651" @default.
- W2149479976 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/4112625" @default.
- W2149479976 hasPublicationYear "1972" @default.
- W2149479976 type Work @default.
- W2149479976 sameAs 2149479976 @default.
- W2149479976 citedByCount "11" @default.
- W2149479976 countsByYear W21494799762017 @default.
- W2149479976 crossrefType "journal-article" @default.
- W2149479976 hasAuthorship W2149479976A5005445993 @default.
- W2149479976 hasAuthorship W2149479976A5034848713 @default.
- W2149479976 hasAuthorship W2149479976A5038976168 @default.
- W2149479976 hasBestOaLocation W21494799761 @default.
- W2149479976 hasConcept C112758219 @default.
- W2149479976 hasConcept C121332964 @default.
- W2149479976 hasConcept C126322002 @default.
- W2149479976 hasConcept C135343436 @default.
- W2149479976 hasConcept C164705383 @default.
- W2149479976 hasConcept C185263204 @default.
- W2149479976 hasConcept C24890656 @default.
- W2149479976 hasConcept C2777463368 @default.
- W2149479976 hasConcept C4141045 @default.
- W2149479976 hasConcept C71924100 @default.
- W2149479976 hasConcept C99398487 @default.
- W2149479976 hasConceptScore W2149479976C112758219 @default.
- W2149479976 hasConceptScore W2149479976C121332964 @default.
- W2149479976 hasConceptScore W2149479976C126322002 @default.
- W2149479976 hasConceptScore W2149479976C135343436 @default.
- W2149479976 hasConceptScore W2149479976C164705383 @default.
- W2149479976 hasConceptScore W2149479976C185263204 @default.
- W2149479976 hasConceptScore W2149479976C24890656 @default.
- W2149479976 hasConceptScore W2149479976C2777463368 @default.
- W2149479976 hasConceptScore W2149479976C4141045 @default.
- W2149479976 hasConceptScore W2149479976C71924100 @default.
- W2149479976 hasConceptScore W2149479976C99398487 @default.
- W2149479976 hasIssue "6" @default.
- W2149479976 hasLocation W21494799761 @default.
- W2149479976 hasLocation W21494799762 @default.
- W2149479976 hasOpenAccess W2149479976 @default.
- W2149479976 hasPrimaryLocation W21494799761 @default.
- W2149479976 hasRelatedWork W1996317152 @default.
- W2149479976 hasRelatedWork W2005760285 @default.
- W2149479976 hasRelatedWork W2014140660 @default.
- W2149479976 hasRelatedWork W2041212282 @default.
- W2149479976 hasRelatedWork W2089880061 @default.
- W2149479976 hasRelatedWork W2126975033 @default.
- W2149479976 hasRelatedWork W2147501709 @default.
- W2149479976 hasRelatedWork W2230772742 @default.
- W2149479976 hasRelatedWork W3142533929 @default.
- W2149479976 hasRelatedWork W79941474 @default.
- W2149479976 hasVolume "30" @default.
- W2149479976 isParatext "false" @default.
- W2149479976 isRetracted "false" @default.
- W2149479976 magId "2149479976" @default.
- W2149479976 workType "article" @default.